<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
      <!--搜素与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList" />
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index" label="#" />
        <el-table-column label="商品名称" prop="goods_name" />
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px" />
        <el-table-column label="商品重量(克)" prop="goods_weight" width="95px" />
        <el-table-column label="库存" prop="goods_number" width="60px" />
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dataFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!--编辑按钮-->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.goods_id)"
              >编辑</el-button
            >
            <!--删除按钮-->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeById(scope.row.goods_id)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>

      <!--修改商品对话框-->
      <el-dialog
        title="修改商品"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="100px"
        >
          <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="editForm.goods_name" />
          </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
            <el-input v-model="editForm.goods_price"></el-input>
          </el-form-item>
          <el-form-item label="商品重量" prop="goods_weight">
            <el-input v-model="editForm.goods_weight"></el-input>
          </el-form-item>
          <el-form-item label="库存" prop="goods_number">
            <el-input v-model="editForm.goods_number"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!--分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: "",
        //当前得页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 10,
      },
      //商品列表
      goodslist: [],
      // 总数据条数
      total: 0,
      //控制修改对话框的显示和隐藏
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        goods_name: [{ required: true, message: "请输入商品名称", trigger: "blur" }],
        goods_price: [{ required: true, message: "请输入商品价格", trigger: "blur" }],
        goods_weight: [{ required: true, message: "请输入商品重量", trigger: "blur" }],
        goods_number: [{ required: true, message: "请输入库存", trigger: "blur" }],
      },
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", { params: this.queryInfo });
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品列表失败!");
      }
      // console.log(res.data);
      this.goodslist = res.data.goods;
      this.total = res.data.total;
    },
    //监听 pagesize 改变事件
    handleSizeChange(newsize) {
      this.queryInfo.pagesize = newsize;
      this.getGoodsList();
    },
    //监听页码值得改变事件
    handleCurrentChange(newpage) {
      this.queryInfo.pagenum = newpage;
      this.getGoodsList();
    },
    // 删除商品
    async removeById(id) {
      // 弹框询问是否删除商品
      const confirmRes = await this.$confirm(
        "此操作将永久删除该商品, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmRes !== "confirm") {
        return this.$message.info("已取消删除");
      }
      //确认删除
      const { data: res } = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("删除商品失败！");
      }
      this.$message.success("删除商品成功！");
      this.getGoodsList();
    },
    //显示编辑对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品失败！");
      }
      //   console.log(res.data);
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改信息并提交
    editGoodsInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.put(
          `goods/${this.editForm.goods_id}`,
          this.editForm
        );
        // 修改失败
        if (res.meta.status !== 200) {
          return this.$message.error("更新商品失败！");
        }
        this.getGoodsList();
        this.$message.success("更新商品成功！");
        this.editDialogVisible = false;
      });
    },
    // 添加商品跳转到添加商品的路由
    goAddpage() {
      this.$router.push("/goods/add");
    },
  },
};
</script>
<style lang="less" scoped></style>
